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Name: The owner of a small bakery has installed solar panels on the roof in
Uploaded: 2024-03-20T07:07:12.000Z
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Description: The owner of a small bakery has installed solar panels on the roof in the hope of reducing electricity costs. For 8 months before the installation and 8 months immediately after, the monthly costs were as follows in hundreds of dollars: Find the 90%

Algebra: Structure And Method, Book 1

(REV)00th Edition

ISBN:9780395977224

Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole

Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole

Chapter2: Working With Real Numbers

Section: Chapter Questions

Problem 11CT

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The owner of a small bakery has installed solar panels on the roof in the hope of reducing electricity costs. For 8 months before the installation and 8 months immediately after, the monthly costs were as follows in hundreds of dollars: Find the 90% confidence interval estimate for the mean of reduction in electricity cost.

Hence,

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Before
12
14
13
17
15
17
18
16
After
10
12
10
12
13
14
13
14
đ
2
3
5
2
3
2

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